---
title: "4150 — 4 equivalent grades, compared"
description: "The designation 4150 is carried by 4 different grades. Compare them on the elements that actually differ, then open the one your print means."
canonical: https://steelequivalents.com/materials/aisi-sae/4150
language: en
robots: index, follow
og_type: website
type: material-detail
language_alternates:
  en: https://steelequivalents.com/materials/aisi-sae/4150.md
  cs: https://steelequivalents.com/cs/materiály/aisi-sae/4150.md
  de: https://steelequivalents.com/de/werkstoffe/aisi-sae/4150.md
  es: https://steelequivalents.com/es/materiales/aisi-sae/4150.md
  fr: https://steelequivalents.com/fr/matériaux/aisi-sae/4150.md
  hu: https://steelequivalents.com/hu/anyagok/aisi-sae/4150.md
  it: https://steelequivalents.com/it/materiali/aisi-sae/4150.md
  nl: https://steelequivalents.com/nl/materialen/aisi-sae/4150.md
  pl: https://steelequivalents.com/pl/materiały/aisi-sae/4150.md
  pt: https://steelequivalents.com/pt/materiais/aisi-sae/4150.md
  ru: https://steelequivalents.com/ru/материалы/aisi-sae/4150.md
  tr: https://steelequivalents.com/tr/malzemeler/aisi-sae/4150.md
  zh: https://steelequivalents.com/zh/材料/aisi-sae/4150.md
  ja: https://steelequivalents.com/ja/材料/aisi-sae/4150.md
  ar: https://steelequivalents.com/ar/المواد/aisi-sae/4150.md
  ko: https://steelequivalents.com/ko/재료/aisi-sae/4150.md
  pt-br: https://steelequivalents.com/pt-br/materiais/aisi-sae/4150.md
  hi: https://steelequivalents.com/hi/सामग्री/aisi-sae/4150.md
content_hash: sha256:90d96ff80d7bde821399b33b40dda815ca54c9cc1c8a4586d6814479cd2c5c39
generated: 2026-09-24
---

> **Machine-readable Markdown rendering.** This is a Markdown representation of a web page,
> served for AI agents and crawlers as a token-efficient alternative to the full HTML.
> Full interactive HTML version: https://steelequivalents.com/materials/aisi-sae/4150
> Canonical URL: https://steelequivalents.com/materials/aisi-sae/4150
> Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi
> Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything
> below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real
> content change; `generated` moves on every render and is not a change signal.

AISI / SAE · United States · 4 grades

# 4150

The designation 4150 is carried by 4 different grades. Compare them on the elements that actually differ, then open the one your print means.

- *Matching grades* **4**
- [*Category* **Quenched and tempered steels · 133 grades**](/categories/quenched-and-tempered-steels "Category: Quenched and tempered steels · 133 grades")
- [*Category* **Spring steels · 52 grades**](/categories/spring-steels "Category: Spring steels · 52 grades")
- [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades")

[Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry")

## Which of the 4 do you want?

This name is carried by several grades. The elements shown are the ones whose values actually differ across the set — the ones that decide the question. Values are the source text verbatim; an em dash means no value on file for that element on that grade, not zero.

| Grade | Material no. | Category | Designations | C% | P% | S% | Si% | Mn% | Mo% |
|---|---|---|---|---|---|---|---|---|---|
| [48CrMo4](/materials/din-en/48crmo4 "48CrMo4") | [1.3565](/materials/material-no/1.3565 "1.3565") 1.3 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 6 | 0,46-0,52 | 0,025 | 0,035 | ≤0,40 | 0,50-0,80 | 0,15-0,30 |
| [50CrMo4](/materials/din-en/50crmo4 "50CrMo4") | [1.7228](/materials/material-no/1.7228 "1.7228") 1.7 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 29 | 0,46-0,54 | 0,035 | 0,035 | ≤0,40 | 0,50-0,80 | 0,15-0,30 |
| [51CrMoV4](/materials/din-en/51crmov4 "51CrMoV4") | [1.7701](/materials/material-no/1.7701 "1.7701") 1.7 | [Spring steels](/categories/spring-steels "Spring steels") | 5 | 0,48-0,56 | 0,025 | 0,025 | ≤0,40 | 0,70-1,10 | 0,15-0,30 |
| [16CrMoV4](/materials/din-en/16crmov4 "16CrMoV4") | [1.7728](/materials/material-no/1.7728 "1.7728") 1.7 | [Others](/categories/others "Others") | 4 | 0,13-0,20 | 0,015 | 0,013 | 0,15-0,35 | 0,50-0,80 | 0,20-0,30 |

## Not sure which one your print means?

Search the catalogue by designation, material number or composition — every name on this page is itself a way in.

[Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry")